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  2. General anaesthesia - Wikipedia

    en.wikipedia.org/wiki/General_anaesthesia

    Oxygen measurement: Almost all circuits have an alarm in case oxygen delivery to the patient is compromised. The alarm goes off if the fraction of inspired oxygen drops below a set threshold. A circuit disconnect alarm or low pressure alarm indicates failure of the circuit to achieve a given pressure during mechanical ventilation.

  3. Oxygen toxicity - Wikipedia

    en.wikipedia.org/wiki/Oxygen_toxicity

    Oxygen toxicity; Other names: Oxygen toxicity syndrome, oxygen intoxication, oxygen poisoning: In 1942–43 the UK Government carried out extensive testing for oxygen toxicity in divers. The chamber is pressurised with air to 3.7 bar. The subject in the centre is breathing 100% oxygen from a mask. [1] Specialty

  4. Hyperoxia - Wikipedia

    en.wikipedia.org/wiki/Hyperoxia

    Excessive exposure to oxygen can lead to oxygen toxicity, also known as oxygen toxicity syndrome, oxygen intoxication, and oxygen poisoning.There are two main ways in which oxygen toxicity can occur: exposure to significantly elevated partial pressures of oxygen for a short period of time (acute oxygen toxicity), or exposure to more modest elevations in oxygen partial pressures but for a ...

  5. Isoflurane - Wikipedia

    en.wikipedia.org/wiki/Isoflurane

    Isoflurane is always administered in conjunction with air or pure oxygen.Often, nitrous oxide is also used. Although its physical properties imply that anaesthesia can be induced more rapidly than with halothane, [10] its pungency can irritate the respiratory system, negating any possible advantage conferred by its physical properties.

  6. Anaesthetic machine - Wikipedia

    en.wikipedia.org/wiki/Anaesthetic_machine

    In modern machines it is impossible to deliver 100% nitrous oxide (or any hypoxic mixture) to the patient to breathe. Oxygen is automatically added to the fresh gas flow even if the anaesthesiologist should attempt to deliver 100% nitrous oxide. Ratio controllers usually operate on the pneumatic principle or are chain linked (link 25 system).

  7. Sevoflurane - Wikipedia

    en.wikipedia.org/wiki/Sevoflurane

    Sevoflurane is an inhaled anesthetic that is often used to induce and maintain anesthesia in children for surgery. [17] During the process of awakening from the medication, it has been associated with a high incidence (>30%) of agitation and delirium in preschool children undergoing minor noninvasive surgery. [ 17 ]

  8. Mouth-to-mouth resuscitation - Wikipedia

    en.wikipedia.org/wiki/Mouth-to-mouth_resuscitation

    The amount of oxygen available to the patient in mouth-to-mouth is around 16%. If this is done through a pocket mask with an oxygen flow, this increases to 40% oxygen. If either a bag valve mask or a mechanical ventilator is used with an oxygen supply, this rises to 99% oxygen. The greater the oxygen concentration, the more efficient the ...

  9. Deep hypothermic circulatory arrest - Wikipedia

    en.wikipedia.org/wiki/Deep_hypothermic...

    The blood pump is then switched off, and the interval of circulatory arrest begins. At this time more blood is drained to reduce residual blood pressure if surgery on a cerebral aneurysm is to be performed to help create a bloodless surgical field. [41] After surgery is completed during the period of cold circulatory arrest, these steps are ...